/**************************通用**************************/
*{
    padding: 0;
    margin: 0;
}

a{
    text-decoration: none;
}

html, body{
    height: 100%;
    width: 100%;
}


/**************************标题栏**************************/
#tittle{
   width: 100%;
   height: 8%;
   background-color: black;
   color: white;
}

.username{
    color: white;
    float: right;
    margin-top: -20px;
    margin-right: 45px;

}

/**************************菜单栏**************************/
#menu{
    height: 92%;
    width: 14%;
    background-color: black;
    color: white;
    float: left;
}

.menu-son{
    display: inline-block;
    text-align: center;
    line-height: 60px;
    width: 100%;
    cursor: pointer;

}

#menu .menu a{
    color: white;
}

#menu .menu a:hover{
    color: mediumslateblue;
}

.addBackgroundColor{
    background-color: blue;
}

/*#menu .menu a:visited{*/
    /*background-color: #ff2341;*/
/*}*/


/**************************内容区**************************/
#contents{
    height: 92%;
    width: 86%;
    background-color: white;
    float: left;
    /*text-align: center;*/
}


